Reinforced-concrete-construction member.



No, 394,991. ,PATENTBD AUG. 4, 1908. 4 E R. ANDERSON. REINFORCEDCONCRETE GONSTRUGTION MEMBER.

- 2 BHEET3-$HEBT 1- I INVENTOR.

ATTQRNEY.

Humane! r'ILED JULY 8; 19m.

WmvEssEs; I

- ,PATENTED AUG.'4.19Q8. on.

TRU

DJULY8 NDERS TE cons .ATIOK FILE REINFORCED GONG APPLIC GTION MEMBER. 3

2 sums-sum 2.

' INVENTOR' ATTORNEY.

l i l 1 i 1 T all .QUILO m it ma y you cern Be. it'knosvn that I, ROBERTAxonnsosxs citizeinoflhe United States of America. and resident of,Cincinnati. county of Hamilton. 5 State of Ohio, have inventedcertainuiew and *usefulllmptoyements in Rcinforced-(oncrete ConstructionMembers, of ivhich the follow- 7 in is a-specificatiom y inventionrelates .to the horizontal 10 members .of' reinforced concrete cmstruction suc'l'i'jas bean s', girdersflo'ors and walls. Itsobjec'tisga meansoi reinforcing such 'co'nstmction members, inwhich no breaksoccur in the renifor'cenient at points where there is jension end in\vlnchthe reinforcement distributed to .the' parts of theconstrucuonmemherp rqpnrt ion. to the tension to which such parts are subject inuse mm in which the reinforcing bars may he manufactured and satin n inthe construction very readily.

This-0 je'ct- .is attained by the means describcdin the specificaiion{mil iilnstrsted in thenccmnpanymg drawings. in which. F igure. 1 .is nvicn' in side aeration of the reinforcinfig hars .in the position theoccupy .intthe'construction.member. the dotted line indicating theoutlines of the concretelof the construction. bar, and of the supports.the strnps being omitted in this. view. Fig. 2 is a View similar to Fig!but showing the tension liars surrounded with concrete, and the strapsinpln'c-e, the concrete being shown in section.

' p ;Fig... 3{isle-sectional view upon an enlarged Fig. 2 .;F '55 i snsectio'na -\"ie similar to Fig. buts I qtving four-.hars in place of twobars,- F1g.. 6,. s awdetail elevation upon'nn' cnlar ed scqleof thereinforcing hat-shown in 40 1 ,5, ...F ;ig,7i s a View similar to Fig. ibut. of. a modified form-of construction. Fig. 8 is .a, plnn ien. of thetension r reinforcing bar shown'in Fig.7. Figs. 9 w. ll'an'd 12 aresectiongl' vie rsjupon an enlarged scale 145 taketihponlines, x -1', rrand r- -r 55 which-have an arch Q and strai ht ends.

V, 1 z v tier; taken t ion line z-2 of PATENT QFFICE;

.nnmoncnn coivcnnws-oons'rnncrmn mamma Specification 0 Letters Patent.

Application siedzrui s, 1901. senn n' 382,666.

V ROBERT nxpia-nsox, OF cikc-iim'rn onto; ism-0M0 'rniz mm-comm": fQONSTR'L'CTIOS CO}U?A}$Y. or CINCINNATI, OHIO, .iconroniriox or onio.

- Patientied Augl. '1'

c, c. The end, 0', extends'overthe 'ce'rit erf'of a support, in thelower part of thebe'ani; A, to a pointbeyond the c'entralpomt-be tweenthe support, B, and its adjacent silpport B'gtherwe the arch, C. extendsat atii'go angle to a oint. c. to the left of thesu'p-f port, B-. hencethe bsrr lies in a horizontal plane in the up er partof the beamftoii'point, upon t 1e 0 posite side of the st!" 6* port, B. Thence tie barextends at t' ie .i same angle to the horizontal as tlie' opposit e'side of the arch' to the" straightpartyq and thence continues in thelower 'p art-'of"'t he" beam to la point near th'e'centcr of'the third"?support, B The second steel bar 'starts'fqb near the center of thesecond support; B'" lies adjacent to the first har."its.arcli'ex'-ftends over the "second support", B 'and its,

ends, c, extend to'& point above theftlrird support, Bfiin the mannerdescribed for'the-75 first bar. At'th'e ends ofthe beam. vi'zi, at theside walls ofthe buiiding..th'ere' a'rc short 1 steel bars, C',' whosesemi-arches'teriniimte in hooked ends, c, above the su ports; B ffandwhose straight ends, 6, exteii'ilinuhcfgo lower part of the beam andtei'ininnteiiuthe center of the supports, B 1}. respectifily i At pointsin the beams nlidwtiyhctvi'cntlie supports the usual-straps; D,"eXtend'up-.""

,wardly and have their endsidfd', 'bent'over 335 .into the concrete ofthe -lioor,' ,E At" the sides of the supports there -are similar"straps, D. In this construction'it issecnf 5 .that thegreatestaniountsfof'metnl'lin.the'f' beafni occur at the points'wherethe tc'i'i'si'on'- o is greatest, v-iz in the -lo\yer'pirrts-l )f' the,beam midway between 't'hesup por ts'y that; i :ihove-the supports inthe, upperpiirtfoftli heani the reinforcing bars nrc integral and arelocated in a pusitiun s'ucli ns'toiesist tli 5 reverse moment occurring"fithlo'i eft e-sij' 1 orts;, that the laps or breaks-nonsens mr zinditsadjacent haioccur above 1 'fport in the lower part of the heann wherethe hcndiriginoment is nil." 'T ht'is'no breaks .ioo occur in thereinforcing biirsn'lier thereis a'bcndin ortension t'orce inlth'ebeani'l ,It 'w'ou d-Ihave been'aitobvioits enpedinti to make the'part,q, ofthejfirst;b:ii'(f;6h i the left of Fig. l integral-with the pol ty;of 1' 5 the third bar, C, and to have'madc the par t,,; c; of the secondbar int'egral'with'the part, c, of the bar, upon the-right. 'T his is a'nliofilification that, might-"be used in fio'or s a s;

t v r Referring to Figs. 7-43; the supports.

, and B are similar to the supports, B-B. The arch (F. in a' steel baroccurs to one side of the center, and the straight end, is shorter thanthe straight 'end, 0. In placing-the bars in position they arealternately reversed. that is. t \'o bars are placed side by Siti. butone being in'reverse direction to the other. Thus, the

the-other as seen in Fig 7. I

two bats stand alongside each other, but at long end. c.-,"of one occursadjacent to the short end, c, .of the other, and the arch, c,v

of. one extends beyond theend of the arch of a point midway between thesupports, the arts, c, stand over the parts. 0'', as shown 111 Fig. 10.,while at the ends they. diverge as shown in F ig. 11. These pairs ofbars are arranged as the. single hex-are shown arranged in Fig. 1, viz,the first pair starts in" ,the lower part of'the beam over-'support, BF,their arches'stand o'ver B, and their ends extend oversupport. '13,while the second pair start over support, B. their arches stand oversupport, B. and they end over support, 13*. The result-is'that directlyabove the support, B, where the reverse moment is the greatest. theret'vi'll he 'the greater amount of metal and that toyt-he left and to theright of the part of the beam occurring above the wp pozt, there will bea decreasing amount of metal in proportion to the decrease inthe tensionmoment.

, At the ends of the beams shown in Fig. 7

and Fig. 8' there are two short bars withtheflseini-arches, C, arrangedsimilarly to the shortbars at the ends of the beams shotvn in Fig. 1;

= 1n the modifications shown in rigs-p13.

it is seen that the laps or breaks occur 'always in the lower part ofthe beam above the.sup ort where there is no tensional stress; tat themetal isdistributed inthe difierent' partsof the beam in proportiontothe ,amountfot tensionjn those parts:-

a that}; these modificatiom but one form of bar.is necessary to bemanufactured and that the process-of setting the parts inpositionisasimpleone m In the modification shownin Fig. 5 the series ofbars are placed side by side similarly' to that shown in Figslz? and 8with the i I. A reinforced exception that the arches C, occur in thecenter, oftthebars of to one side thereof. a

' What I claim is: t Construction l'member for extending over-aseries.of sup I'ports -consisting ofconcrete in" which. are

embed The arches of the ded series-oi bars, each of theZbars.

.concrete of the memberQ-Ihe support in the .upper of which-arearched-soas to extend over a art ofthe concrete and .having upon eac side of anarch straight members to extend over the two. adjacent supports in thelowerart of the tits being arranged so that the arc-hes in one series asover every other support and the arches 1n the adjacent series pass overthose su ports over which the arches in the first o not pas. p v

-'2. A reinforced, concrete construction member for extending over asecond support to a third support and having reinforcing bars. each barbeing bent into an arch intermediate itsstraight: ends. said archextending overlthe second support in the up er part of theconstructionmemberan'd tiie-ends of the bar being located in the lower art of .theconstruction member andem ing above the first! and third supportsrespecv 3, A reinforced; -concrete construction memberfor. extending romone support over a'second-support to a third support and having a seriesof reinforcing bars, each bar being bent into.an archand having straightends, said arches-extending over the second support in the upper part ofthe construction member and the ends of .the. bars being io'cat'ed inthe lower part of the member and extending to the first and third-supports respectively; ,the arch in one bar.

extending -more beyond the right of the center of-thesecond support thanupon the left thereof and the arch in an adjacent bar extending moret'o-the-left of the center of said. second support than upon' the rightthereoff 4. A reinforced concrete construction ritemberlfor extendingover'aseries vof supports having a 'series of bars made similar .inshape, each bar having an arch and straight ends; one. of said .endsbeing longer than the other, the bars being'placed side by'side inthe'construcrion member with the arches occurring over the-s'u portsareal thebars being placed side by sit e in alternately reverseddirections so that the are?! lin

